Ore concentrating tray



FIG. 1 is an enlarged isometric view of an ore concentrating tray showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a side elevational view of the side opposite that shown in FIG. 2;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is an end elevational view thereof;

FIG. 7 is an end elevational view of the end opposite that shown in FIG. 6. 

The ornamental design for an ore concentrating tray, as shown. 